Holm, John. 1984. Variability of the copula in Black English and its creole kin. American Speech 59. 291-309.
@article{holm1984, author = {Holm, John}, journal = {American Speech}, key = {Holm 1984}, pages = {291-309}, title = {Variability of the copula in Black English and its creole kin}, volume = {59}, year = {1984} }